Drarry Instagram: draco has requested to follow you

You could probably already tell by the title. This takes place in their 8th year at Hogwarts, Postwar. The 8th years are aloud phones. What happens when two rivals find themselves following each other? Disclaimer: I kept some people alive. Sorry in advance if the story line is hard to follow or if my writing skills aren't good. This is my first ever story!